Findings of I-131 SPECT/CT, <sup>18</sup>F-FDG, and <sup>68</sup>Ga-FAPI-04 PET/CT Imaging in a Patient Treated with Radioiodine Therapy for Metastatic Papillary Thyroid Carcinoma
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P: 57-61
February 2023

Findings of I-131 SPECT/CT, 18F-FDG, and 68Ga-FAPI-04 PET/CT Imaging in a Patient Treated with Radioiodine Therapy for Metastatic Papillary Thyroid Carcinoma

Mol Imaging Radionucl Ther 2023;32(1):57-61
1. University of Health Sciences Turkey, İstanbul Bağcılar Training and Research Hospital, Clinic of Nuclear Medicine, İstanbul, Turkey
2. University of Health Sciences Turkey, İstanbul Training and Research Hospital, Clinic of Nuclear Medicine, İstanbul, Turkey
No information available.
No information available
Received Date: 26.01.2022
Accepted Date: 20.07.2022
Publish Date: 23.02.2023
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ABSTRACT

A 50-year-old man undergone total thyroidectomy and histopathology revealed papillary thyroid carcinoma with a tumor size of 4.5 cm. The patient was referred to a nuclear medicine clinic for radioiodine therapy. Since the thyroglobulin level before the treatment was 495 ug/L, low-dose (185 MBq) I-131 scan was performed. In addition to multiple liver metastases, bone metastases were detected in the sacrum and right 7th rib in I-131 whole body scanning and single photon emission computed tomography/computed tomography (CT) imaging at the time of initial staging. We present a case of multiple metastatic papillary thyroid carcinoma whose radioiodine treatment response and clinical outcome were evaluated with 18F-fluorodeoxyglucose and Gallium-68 FAPI-04 positron emission tomography/CT.

Keywords:
Papillary thyroid carcinoma
liver metastasis
radioiodine therapy
I-131
18F-FDG
68Ga FAPI-04
PET/CT

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